Altman Z-Score Calculator

How to use and interpret the Altman Z-Score

This calculator estimates financial-distress risk with the original five-factor Altman model. It was designed for publicly traded manufacturing companies, so the result is best treated as a screening signal rather than a universal bankruptcy forecast. A higher score generally indicates a stronger combination of liquidity, accumulated profitability, operating performance, market-value support, and asset efficiency. A lower score flags a need for deeper review of cash flow, debt maturities, covenant headroom, industry conditions, and accounting quality.

Enter consistent financial data

Sales should be net revenue for the same annual or trailing-twelve-month period as EBIT. Higher sales increase the asset-turnover component, but unusually high turnover can reflect a low asset base or industry structure rather than superior credit quality. Do not mix quarterly sales with year-end assets unless you annualize the income-statemen t figures consistently.

EBIT measures operating earnings before interest and income tax. Higher EBIT increases the score more strongly than the other asset-based ratios because its coefficient is 3.3. Negative EBIT is valid and reduces the score. Use a recurring operating figure when possible; one-time gains, restructuring charges, or unusual impairments can distort the signal.

Total assets is the balance-sheet total and must be greater than zero. It is the denominator for working capital, retained earnings, EBIT, and sales. Because four components use this denominator, an incorrect asset figure affects most of the model. Total liabilities is the book value of all liabilities and must also be positive. It is used only in the market-equity ratio, where higher liabilities reduce the equity cushion.

Net working capital is normally current assets minus current liabilities. Positive working capital raises the score; negative working capital lowers it. The optional helper uses accounts receivable plus inventory minus accounts payable, mirroring a simplified operating working-capital approach. For a complete balance-sheet calculation, include all relevant current assets and current liabilities rather than relying on only those three accounts.

Market value of equity is the current market capitalization, typically share price multiplied by diluted shares outstanding. A larger market value relative to liabilities increases the score. The optional helper performs that multiplication. Use a share price close to the financial-statement measurement date, and account for stock splits or major issuance so price and share count are on a compatible basis.

Retained earnings is the cumulative balance reported within shareholders’ equity, not simply the current year’s net income. A positive accumulated balance raises the score, while an accumulated deficit reduces it. The optional helper estimates retained earnings as net income minus dividends for the period; it is useful for a simplified example but is not a substitute for the actual balance-sheet retained-earnings account when that figure is available.

Formula and score components

Z = 1.2 × (working capital ÷ total assets) + 1.4 × (retained earnings ÷ total assets) + 3.3 × (EBIT ÷ total assets) + 0.6 × (market value of equity ÷ total liabilities) + 1.0 × (sales ÷ total assets)

The result cards label these five ratios X1 through X5. X1 is a short-term liquidity measure. X2 captures accumulated profitability and indirectly reflects business maturity. X3 measures operating return on the asset base. X4 compares the market’s equity valuation with the book value of liabilities. X5 measures how efficiently assets generate revenue. The formula audit table shows each numerator, denominator, raw ratio, coefficient, and contribution, so you can reproduce the total independently.

Reading the risk zones and contribution chart

A score below 1.81 falls in the distress zone under the original interpretation. A score from 1.81 through 3.00 is the gray zone, where the model does not provide a clear low-risk signal. A score above 3.00 is the safe zone. These thresholds are classification boundaries, not literal probabilities. A company at 3.01 is not fundamentally transformed compared with one at 2.99, and a trend over several reporting periods is often more informative than a single observation.

The contribution chart decomposes the final score into five weighted bars. Positive bars add to the score and negative bars subtract from it. The largest bar identifies the ratio currently doing the most work in the model. This is useful for sensitivity analysis: improving EBIT usually has a strong effect because of its 3.3 coefficient, while reducing liabilities can improve the market-equity ratio. However, mechanically increasing one ratio should never be confused with creating economic value; asset sales, debt refinancing, equity issuance, and working-capital changes can have multiple effects across the financial statements.

Practical checks, limitations, and common mistakes

• Use figures from the same reporting date and period, and keep units consistent. Entering some amounts in thousands and others in full dollars will make the score meaningless.
• Prefer audited or filed financial statements. Public-company data can be checked through the SEC EDGAR filing search.
• Confirm whether the original public-manufacturing model is appropriate. Private manufacturers and non-manufacturing firms use alternative Altman specifications.
• Do not treat the score as investment, lending, legal, or insolvency advice. Combine it with cash-flow forecasts, debt-service coverage, liquidity runway, covenant analysis, and qualitative business risk.
• Investigate sudden score changes. A market-price movement can shift X4 even when accounting fundamentals are unchanged, while acquisitions can expand assets before expected earnings appear.

For further context, review Edward Altman’s credit-risk discussion hosted by NYU Stern, the Altman Z-Score overview at Investopedia, and the SEC’s guide to using EDGAR for company research. The workbook export preserves the current assumptions, result, ratio breakdown, and methodology notes so the analysis can be reviewed or incorporated into a broader credit file.